PDF malware analysis — malicious · aac68bfab90c9e64

MALICIOUS

PDF

1.4 KB

MD5: 609f176dfbfb506b45992e096b57da30 SHA-1: 5c3d27c22bef26a68c1ef9e2a3e9b88c557394d3 SHA-256: aac68bfab90c9e64ac0887b1491025ec7e9b16e4687c5a6c706a76e97694ced6

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability via the media.newPlayer object. This vulnerability allows for the execution of arbitrary JavaScript, which is likely used to download and execute a second-stage payload. The presence of multiple JavaScript streams and the unescape() function indicate obfuscation techniques commonly used to hide malicious code.

Heuristics 5

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `e55cce10cac99ef0853f3d254474aa7aba54b51646ad4dfc0343e9ab2706cdd4`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1272 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `92442226cfc80e0b1acf15549fffdad8a3af8668a2746886cc074ff3148d2477`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48F	258 bytes

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